Emergency brake for automobiles



`J. W. ORR

EMERGENCY BRAKE FOR AUTOMOBILES Filed dan. 9 1924 2 Sheets-Sheet 1 I y I Inventur Jam ESM F? Oct. 7 1924,

lJ. w. QRR

EMERGENCY BRAKE FOR AUTOMOBILES Filed Jan. 9 1924 2 sneeze-sneer 2` I In'vgnir l JamE 5 [111" BHW His Anrnef Patented @et 7, 1924.

.UNIE srrss PATENToFFIcE.

JAMEs w. canon ykansas CITY, ,MISSOURI EMERGENCY BRAKE FOR AUTOMOBILES.

Application filed January av brake for use in connection with wheeled vehicles in general. lThe primary object of the invention is the provision of an emergency brake for automobiles, which is to be used in addition to the customary traction wheel brake, wherever the operator deems it advisable or necessary.

Another object of this invention is to provide an improved form o-f emergency brake that is simply and quickly operated, will be cheap to make and easily `attached to any make or style `of automobile. L

A still further object of the invention is to provide a device of the character mentioned that will bey an improvement upon, and of value in manufacturing, the .emergency brake for motor vehicles as described and claimed in my Patent Number 1,470,098, issued October 9,1923.. l

In its preferred form, the emergency brake is built in compact form, so as toitake up as little space as possible when attached ,t0 the running board of an automobile. However the design used for 'illustration is only one specific form, especially with regard to the compact lever structure, 'and it is understood that many other arrangements Y of details can be made `without' departing` from the scope of the invention. In the drawings Figure 1 is a side elevationmobile withthe improved `form of emergency brake in a housed position. l

Fig. 2is a longitudinal verticalcentral section of'thebrake in a functioning position.

' Fig. 3 is av section taken on line III-IIIy of Fig. 2, lookingl in thedirection of the arp 2 showing the .Chai-11 shoe construction,

of an autoj Fig. 4 Iis ay longitudinal vertical central 9, 1924. serial No. 685,200.r

Fig. 7 is a bottom plan viewof the emerl* 1.510346vv gency brake, and itsoperating levers, in the housed orI closed position. Y 1

Fig. 8 is a similar view of the device with the brake in a functioning position and the operating levers open. i

Fig. 9 is a transverse section ofthe lower part of an automobile taken on aline just forward of the operating levers, and lookin towardthe rear, and y lig. 10i is a fragmentary View taken on kline X-X of Fig. 9.

Referring now to the drawings in detail,

`wherein similar reference characters referv to like parts throughout the several views,

The letter A designates-an automobile to which the emergency brake. has 'been aflixe'd;4

for the purpose ofactingA upon each of the rear wheels 1V. fr

The emergency `brake is preferably carried under the running boards 11 and vremovably attached thereto by a vpair of spaced apart transverse grooves formed by the rigid attachment of angle virons 12 which may be continued the entire width o-f the automobile and, if desired, braced by furtherattachment toi-the channels of the` chassis 13.

Plate 14 constructed to|- form a pair of parallel lspaced apart channelsl,` by having its sides bent downwardly and inwardly, provide'lneans for reciprocably supporting a yoke lwhich travelsovera major portion of the length of channels 15` when the emergency brake isoperated. Plate 14 projects beyond the channels at each end to allow en`- gagementwith angles 12. `Channels 15 are also Iclosed at their rearward ends (as shown in'Fig. 3) to accommodate bufferl springs 17 which tend to bring yoke 16 to amore gradual stop when the brake is employed. A

Yokefl `carries a transverse rodvlS upon which a pair of spacedy parallel shoe carry`y ing arms 19 are vpivoted attlneir forward end. These arms 19 are spaced apart to straddle the rear wheel W and carry, at their rearward end, a shoe 20 which is preferablymade up of cross chains connected di-` rectly to the arms by rings 21. I'

Means for bringingand holding thebrake shoe'l 20 and arms 19 into housed .or inoperative position may be. constructed by using a large 'Ushaped rockerA rod orl spr-ing 22 which engages theshoe arms 19 intermediate its endspas`ses toyrod'18 and is loosely y Wrapped thereabout fone a @Oil Spring which tends to constantly lift the shoe arms. The two ends of the `l.l-shap,ed rocker rod or spring 22 extend forward and beneath yoke 16, terminating in downwardly curved ends 23 as shown in F ig. 2.

Inclined'lugs 24 supported by each of the two channels directly opposite eac-li other and in the line of travel of rocker rod or spring 22, at a. proper predetermined distance to the front to allow complete disengagement of slice and wheel 1V, and engage the curved ends 23 shortly before yoke 16 completes its forward travel. This action forces curved ends 23 downwardly, tightens the coils about rod 13 and forces the rear end np, which carries shoe arm 19 and slice 20 into a housed position suitable for carryino.

73 ln using the emergency brake,the opposite action takes place and, with the gripping of wheel W by the first cross chain, when the device is forced to the rear, the shoe is immediately snapped into place beneath the rear wheels.

To operate the emergency brake, which kconsists primarily of Jforcing yoke 16 along 'channels 15, a series of levers carried by a cross-frame bracket are centrally located beneath the car and actuated by -a hand lever 26 and spring 36, the hand lever being placed vwithin easy reach of the driver of the automobile.

Connecting rod 27 couples hand lever 26 with actuating lever 28, which is pinned to a vertical shaft 29, pivotally supported by spaced ears 30 of brackets 25. V

A twin lever 31, also pinned or rigidly attached to shaft 29 carries a pair of substantially arcuate levers 32 and 33 at each of its ends. These arcuate levers pass on opposite sides of shafts 29 and their remote ends travel in opposite directions, when shaft 29 is rotated by actuating lever 2S.

The remote or opposite ends of levers 32 and 33 are pivotally connected to one end of right angle yoke levers 34 which are each pivotally carried, equidistant from the center as at 3t, by bracket 25, and` are identical in shape. Their outer ends are slotted and connected to yoke 16 by pivot p-in This slot allows an rarcuate path to be described by the outer end of lever 34, yet

forces yoke 16 along the straight line of channels 15.

When the levers yare closed, rand the brake shoe housed as shown in Fig. 7, pivot points B, C, E and F are in a locked position beyond dead center, with relation to pivot point D. This position is taken against the tension of coil spring 36 which may be placed at the point 3%. One end of spring 3.6 is preferably rigidly attached to some part of bracket 25, while the other end is ,fastened to lever 34. This spring y36 is carried under high tension and imparts quick action to the brake mechanism through lever 311 immediately after' lever 26 and rod 27 has carried points B, C, E and F behind dead center, and out of a locked position.

r)teturning the operating means again tightens spring 36, and the device` is ready for the next emergency.

A'trigg-er mechanism may be interposed between operatiiio' lever 26 and. the series of levers whereby the device may be operated without quick and dangerous backward movement of said lever.

vThis leverage is compactly arranged and has proven highly vdesirable iny operating `the emergency brake. Fig. 7 and Fig. 8 clearly illustrate the relative positions taken vby all the levers. y,

lt will thus be seen that I have devised a comparatively simple, compact and efiicient arrangement and construction for fulfilling the desir-ed object of the iinvention, and while I have `illustrated what now seems to constitute the preferred form of construction, l desire to reserve the right to make such changes or modifications as may fairly fall within the scope of the following claims.

`What l claim is:

1. An emergency brake for automobiles, comprising a brake shoe, arms carrying said shoe, a slidably mounted yoke carried -by the automobile, said arms being pivoted on the yoke, manually operated means adapted to place the brake shoe inoperative position, and means ladapted to hold said brake .shoe in housed position; said first means including a pivotally mounted arm operatively connected to said yoke, and a series `of levers connecting said pivotally mounted arm with an operating handle.

2. An emergency brake for automobiles, comprising a brake shoe, arms carrying said slice, a slidably mounted yoke carried by the automobile, manually operated means adapted to place the brake shoe in operative position, and mea-ns adapted to hold said shoe in housed position; said first means including a pivotally mounted arm operatively connected to said yoke.

An emergency brake for automobiles,

comprising a brake shoe, arms carrying said shoe, a slidably .mounted yoke carried by the automobile, said arms being pivoted on the yoke, manually operated means adapted to place the brake shoe inoperative position; said first means including a pivotally mounted arm operatively connected to said yoke, a series of levers connecting said pivotally mounted arm with an operating khandle and limiting buffer springs positio-ned in the plath of said slidably mounted yoke.

4. An emergency brake for automobiles, comprising a brake shoe, arms carrying said slice, a slidably mounted yoke carried by the automobile, said arms being pivoted on llO the yoke, manually operated means adapted to place the brake shoe in operative position, housing means; said irst means including a pivotally mounted arm operatively connected to said yoke, a series of levers connecting said pivotally mounted arm With an operating h'andle and limiting buffer springs positioned in the path of said slidably mounted yoke, said housing means including a plate having integnal parallel channels, and lifting means for said shoe and supporting arms.

5. An emergency brake for automobiles, comprisinga brake shoe, arms carrying said shoe, a slidably mounted yoke carried by the automobile, said arms being pivoted on the yoke, manually operated means adapted to place the brake shoe in operative position.

a pivotally mounted .arm operatively connected to said yoke, a series of levers oonnecting said pivotally mounted arm With an operating'handle, and limiting buffer springs positioned in the path of said slidably mounted yoke, said housingmeans including.

a plate having integral parallel channels, and lifting means for said sho-e and supporting arms comprising linclined lugs carried by said channels, a rocker fulcrumed at the pivotal point of the shoe carrying arms, said lugs being positioned to operate said rocker` during a portion of the rectilinear movement of said yoke.

In testimony whereof I hereunto affix my signature.

v JAMES W. OBR. 

